2 Copyright (C) 1996-1997 Id Software, Inc.
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 See the GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 // cvar.c -- dynamic variable tracking
25 char *cvar_null_string = "";
32 cvar_t *Cvar_FindVar (char *var_name)
36 for (var=cvar_vars ; var ; var=var->next)
37 if (!strcmp (var_name, var->name))
48 float Cvar_VariableValue (char *var_name)
52 var = Cvar_FindVar (var_name);
55 return atof (var->string);
64 char *Cvar_VariableString (char *var_name)
68 var = Cvar_FindVar (var_name);
70 return cvar_null_string;
80 char *Cvar_CompleteVariable (char *partial)
85 len = strlen(partial);
91 for (cvar=cvar_vars ; cvar ; cvar=cvar->next)
92 if (!strncmp (partial,cvar->name, len))
104 void Cvar_Set (char *var_name, char *value)
109 var = Cvar_FindVar (var_name);
111 { // there is an error in C code if this happens
112 Con_Printf ("Cvar_Set: variable %s not found\n", var_name);
116 changed = strcmp(var->string, value);
118 Z_Free (var->string); // free the old value string
120 var->string = Z_Malloc (strlen(value)+1);
121 strcpy (var->string, value);
122 var->value = atof (var->string);
123 if (var->server && changed)
126 SV_BroadcastPrintf ("\"%s\" changed to \"%s\"\n", var->name, var->string);
135 void Cvar_SetValue (char *var_name, float value)
139 // LordHavoc: changed from %f to %g to use shortest representation
140 sprintf (val, "%g",value);
141 Cvar_Set (var_name, val);
147 Cvar_RegisterVariable
149 Adds a freestanding variable to the variable list.
152 void Cvar_RegisterVariable (cvar_t *variable)
156 // first check to see if it has allready been defined
157 if (Cvar_FindVar (variable->name))
159 Con_Printf ("Can't register variable %s, allready defined\n", variable->name);
163 // check for overlap with a command
164 if (Cmd_Exists (variable->name))
166 Con_Printf ("Cvar_RegisterVariable: %s is a command\n", variable->name);
170 // copy the value off, because future sets will Z_Free it
171 oldstr = variable->string;
172 variable->string = Z_Malloc (strlen(variable->string)+1);
173 strcpy (variable->string, oldstr);
174 variable->value = atof (variable->string);
176 // link the variable in
177 variable->next = cvar_vars;
178 cvar_vars = variable;
185 Handles variable inspection and changing from the console
188 qboolean Cvar_Command (void)
193 v = Cvar_FindVar (Cmd_Argv(0));
197 // perform a variable print or set
200 Con_Printf ("\"%s\" is \"%s\"\n", v->name, v->string);
204 Cvar_Set (v->name, Cmd_Argv(1));
213 Writes lines containing "set variable value" for all variables
214 with the archive flag set to true.
217 void Cvar_WriteVariables (FILE *f)
221 for (var = cvar_vars ; var ; var = var->next)
223 fprintf (f, "%s \"%s\"\n", var->name, var->string);